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Across 3. A chemical treatment that destroys quickly dividing cells 5. The process by which basic cells become more specialized to perform a specific function 8. Genes that control the cell cycle or when cells should divde 10. A unique event that occurs during Prophase I of meisos in which homologous chromosomes exchange segments to produce genetic variability (2wrds) 11. Male germ cells for some organisms 12. Chromatin becomes this during prophase 15. Most simple, basic cells, that are activated to start dividing and producing specific proteins of the cell they will become. (2wrds) 21. What a cell is called when it has only 1/2 of the genetic information in it. ex. gamtes 22. The process by which organisms can replace lost body parts 23. Another name for a gamete or sex cell (2wrds) 24. Cell division in somatic cells 25. The 2 identical halves of a chromosome 26. Another name for body cells other than sex cells

Down 1. Random errors in DNA replication that can cause cancer (2wrds) 2. Where the chromosomes line up in the cell during metaphase 4. Common name of a side effect of chemotherapy known as alopecia 6. 95% of the cells cycle spent preparing to divide 7. Groups of mutate cells 9. When the 2 sister chromatids separate and move towards opposite ends of the cell 13. This is replicated during interphase 14. Most common carcinogen that causes skin cancer 16. Process by which newly replicated cells split 17. Unwound DNA found in the nucleus when the cell is not dividing 18. What uncontrolled cell division can lead to 19. How the 2 resulting daughter cells compare to the original cell in mitosis 20. Any substance that has been found to cause cancer